Re: PATCH: Add memory barrier to malloc

["H. J. Lu" <hjl at lucon dot org>]

On Sat, May 03, 2003 at 12:56:43PM -0700, H. J. Lu wrote:
> On Sat, May 03, 2003 at 10:40:37AM -0700, H. J. Lu wrote:
> > We got corrupted linked list in malloc due to memory ordering issues
> > on our ia64 MP machine. This URL
> > 
> > http://lse.sourceforge.net/locking/wmbdd.html
> > 
> > has some relevant info. We need to make memory barrier available
> > to the whole glibc, even user application source codes. This patch
> > adds memory-barrier.h to glibc internal headers and adds one memory
> > barrier to malloc.
> > 
> 
> I added nptl and fixed a typo.
> 

I should have waited a while. MEMORY_BARRIER is not available in nptl.
I am not sure where to define it. I defined it for ia64 in nptl. 
I think we should move it from linuxthreads to libc so that we don't
need to do it in nptl.


H.J.

Attachment: libc-mb.patch
Description: Text document